6 underrated online store ideas with huge potential for 2027

By January 2027, the global ecommerce market on expected to hit $7.9 trillion. However, the more the market expands, the more crowded it gets.

Established brands with bigger budgets, years of SEO authority, and a loyal customer base already dominate the most popular niches, making it hard for new businesses to gain any traction, let alone make consistent sales.

That's why, for anyone just starting out, choosing from less explored niches where competition is low and opportunity is still wide open is best.

Here are the top 6 online store ideas with huge potential for 2027 that budding entrepreneurs should definitely consider.

Online store ideas for 2027

1. Equipment rental store

2. Ingredient and maker supply store

3. Samples and trial store

4. Spare parts and accessories store

5. Experience kit store

6. Sensory and accessibility product store

Let's see each in detail.

1. Equipment rental store

Most online stores sell things. You could take a different direction and lend them. High-cost, low-frequency products are the best fit for this idea.

Some examples are cameras, lighting kits, event supplies, camping gear, or power tools. The customer pays for access and returns the item when they are done.

Photographers, musicians, and event planners often have idle professional equipment that could be earning between uses.

The American Rental Association forecasts the US equipment rental industry to reach $83.5 billion in 2026, growing 3.6% year on year, but a lot of online stores have yet to capitalize on this, especially for retail.

Business owners need to manage a physical asset pool, tracking condition, scheduling between bookings, and cleaning between uses.

The major risks are asset depreciation and damages. Clear damage policies, deposits, and insurance must be non-negotiable.

2. Ingredient and maker supply store

There is a well-documented surge in home making like brewing, candle-making, soap-making, fermentation, bread baking, or resin crafting.

In fact, 33% of US homebrewers now purchase the majority of their supplies online (American Homebrewers Association).

New online store owners can leverage this by selling raw materials to home producers, such as malt and yeast for brewers; wax, wicks, and fragrance oils for candle-makers; soap bases and essential oils for cosmetic makers; sourdough cultures and heritage flour blends for bakers.

Since buyers in this space are knowledgeable and might ask technical questions, the stores that earn their trust will be the ones that can offer expert guidance on quantities and techniques.

The only aspect to be careful of is that some ingredients carry shelf life and storage requirements. Along with this, shipping regulations also apply to some materials, like alcohol-based, solvent, or food-grade products which have their own compliance requirements.

3. Samples and trial store

A samples store sells small quantities on purpose. Buyers pay to try the product out before committing.

This can range from skincare products, a fragrance discovery set, paint tester collections, or even a coffee tasting box with six single-origin bags.

This online store idea can be the best fit for stores selling products where sensory experience or personal preference is the main purchase barrier.

It also works well as a secondary channel for any existing product-based store that wants to reduce the barrier to a first purchase and bring more buyers into the top of the funnel.

The real value in this model is the conversion funnel. A sample buyer who converts to a full-size purchase is worth significantly more than the sample revenue alone.

The possible issues in this idea is that since packaging costs per unit are proportionally higher for small sample sizes, the profit-margin can become low, if there is no clear conversion. However, not all products are suited to sampling. High-cost items where even a small sample is expensive to produce may not work out.

4. Spare parts and accessories store

This is one of the most overlooked online store models where you do not sell the product. Instead, you sell what people need to keep the product working.

For example, vacuum cleaner bags and filters, coffee machine descalers and seals, washing machine door seals and drum paddles, watch straps and batteries, bike chains and brake pads, and  the like.

Search intent in this category is extremely high and well-defined. Someone searching for a filter replacement is not browsing, they are ready to buy immediately.

Repeat purchase is also built into the model as consumable parts wear out on a predictable schedule.

The business best suits those who can build or source a reliable parts catalogue for a specific product category and have good technical knowledge.

5. Experience kit store

An experience kit store sells everything a person needs for a specific experience or occasion, bundled together in one single purchase. Instead of buying individual items from multiple places, the customer gets a complete, ready-to-go package.

For instance, a first-time camping kit with a lightweight tent, sleeping bag, cook set, and a beginner's guide.

The product is not just the items inside, it is also the convenience and the experience.

This works because it removes what is known as the research burden. When someone is trying something new, they do not know what they need, what brands to trust, or how much to spend. A well-curated kit answers all of those questions and makes the buying decision significantly easier and faster.

By bundling, your overall average order value will also become higher than single-product stores in the same category.

The main challenge to plan for is multi-component inventory management. Unlike a single-product store, every kit depends on multiple items being in stock simultaneously. If even one component runs out, the entire kit cannot be fulfilled.

6. Sensory and accessibility product store

Mainstream retail almost entirely ignores one of the most loyal buyer groups in ecommerce: people with sensory sensitivities, autism, ADHD, physical disabilities, or other accessibility needs who require specific products

Most of those products are either unavailable locally, difficult to find online, or sold without the context that helps a buyer understand whether a product will actually work for them.

The market is substantial and growing. The global sensory toys market alone is valued at $2.46 billion in 2026, growing at 11% annually, according to Business Research Insights.

This ecommerce idea will work best for people who have lived the experience of the community, have a professional background in occupational therapy, special education, or care, or have a close family connection to the needs being served.

Authentic understanding of what the buyer actually experiences is a genuine competitive advantage here and it will show in product selection, in how you describe products, and in how you handle questions from buyers who need reassurance before they commit.

Product claims must be accurate and carefully worded, making therapeutic claims without evidence creates regulatory risk. Sourcing from reputable manufacturers who meet safety standards is a must as cutting corners on quality is not acceptable.

How do you choose the right online store idea?

The most basic checkboxes your online store idea has to tick are these:

• Where do you already have an advantage, such as a supplier relationship, a technical skill, a community, lived experience, or an existing customer base? Start there.

• Which of these ideas could you write a convincing product description for right now, without researching it first? If you can, that is a good sign you understand the buyer well enough to serve them credibly.

• Which one still interests you after reading the difficulties? Every business thrives on hard work and you will need genuine interest to push through that.

If you want a more structured framework for making this decision, our guide on how to choose the right ecommerce product walks you through it step by step.