When it comes to buying parts for your 3D printer or RC cars or even modules and sensors for your Arduino, Indian makers do not have that many choices that offer quality products for reasonable prices, compared to what available to foreign makers. Though there has been a surge in these online market places sprouting up everywhere in India, some of them as startups, not many of them offer good service to this rather amateur business sector. I'm not talking about sites like Amazon, eBay or Flipkart or anything but e-commerce websites that exclusively sell products for makers and DIYers. The problem with websites like eBay is that they simply don't care. They know that they're not going to profit much from selling Arduinos in contrast to selling TVs and mobile phones. In fact, they're the most awful places to buy DIY parts and eBay being the shittiest. Because anybody with a little knowledge of electronics and a import license can start selling on these platforms with copy pasted descriptions and images downloaded from the internet. They do not care about quality, product specifications or customer service.
This is where the importance of exclusive maker stores. A good number of them know what they're doing such as new products and trends among makers. I've bought parts from many of such websites. So here I'm going to list some of the e-commerce stores based in India to buy DIY parts from. I don't have experience with all of them but I'll list them anyway so that you'll have as many choices as possible. I'll sort them based on the range and quality of products, shipping and return policies, website, product specification and price, starting from the best.