Selling Business Down the Road

I’ve been an Amazon seller for about 3 years. I have my own LLC, brand, and trademark and produce my own products at scale in the US. After about 3 years, business has grown from $20k to $100k to now $250k in revenue with profitability. I want to continue scaling for a few more years, but my goal is to eventually sell the business.

Are there buyers or private equity firms that purchase Amazon businesses? Does anyone have experience with this in the past, know what these buyers are looking for and the types of multiples that are put on Amazon businesses (with sales on other platforms too), and know how one can get their business in the best position to be sold? Are there difficulties that I can get ahead of now so that a sale can eventually be made smoothly? Any advice is appreciated.