Buying is maybe 5% of the work, selling is 95%. I use eBay, been selling for about 15 years there. It's not easy, not in any way. You have to work your tail off to keep customers happy. I go above and beyond - lots of communication, pictures of packed items and packaging, and nearly instantaneous upload of tracking info. Even then, about 10-15% of buyers are a pain and you have to deal with them. You need to setup a system. Everything from listing items (and taking photos), to receiving payment, then the whole packing and shipping routine. I have corporate accounts with both Fedex and UPS; printing labels at home is the only way to go. I also have an inventory of about 100 different boxes ready to go. Just steel yourself for the idea that selling a large inventory is going to be a lot of work, and take a lot of time. A $70k Lego inventory, sold over eBay an item at time, is a good 6 month nearly half time job, or it could be done over about a year to 18 months working off hours. That's just how it is. The only other alternative is to find a buyer for the whole lot, and with a $70k inventory, nearly any buyer is going to want to net 15-20% on that (after their fees), maybe more. You'll take at least a 30% hit on the value of your inventory if you try to sell-out as a whole, but it is an option if the thought of selling off individually is too much. FYI, I have a smaller inventory ($50k-ish with good growth potential) and my plan is to spend my 1st year of retirement (in 3 to 5 years) selling Lego. YMMV.