I used to order from buy.com - one time I bought an accessory pack for a Nokia cellphone (case plus headset & car adapter), and they sent me 144 packs instead of the one I had ordered. Only billed me for the one however . So I called them up and told them of their mistake - they initially wanted me to haul the 143 unopened packs to the nearest Fedex depot but I said that would take two trips in my car so I'd just leave them piled up at my front door and they could make a pickup arrangement, which they did. Otherwise I'd have had quite the yard sale .
However what turned me off from ordering from them was when I bought a 22" monitor with one of those mail-in rebates for $100. Filled out the rebate & sent in all the required materials, and then never got my check. Forget the name of the rebate handling outfit but there were tons of complaints about them all over the internet. So eventually I called buy.com's customer service but they said it was an issue between the rebate and the monitor manufacturer. So I told them I'd never buy from them again..