I've spent a lot of money winning things on mac bid and probably half if not more of the items were trash, missing important parts or a completely different item than what was supposed to be in box. For example, won a bid for two glass spray bottles, got a pair of women's dress pants instead. You can't return anything unless you pay a $7-10 fee which is ridiculous but clearly they do that because most of their items would be returned. I've noticed a bid would be at $1 until almost the exact same time close to the end of the bid where the price will increase drastically. Some items are bid over retail price then added fees make it much more than retail. There's no way people are stupid enough to do that when the retail price is marked on the item post. Probably computer generated bidding. This is especially true on large merchandise, such as vanities and appliances.
If you decide to try Mac bid just beware to not overbid for something that could very well be trash. Uploaded photo is an example of two items which would have been a good deal except the charger was missing parts that allow it to work and the phone holder was broken. Spent over $60 on trash and almost $20 more on ridiculous fees. They also claim to check everything before auctioning it, which is definitely a lie because I've bought items in boxes that were literally empty. They wouldn't do anything about it because I didn't open it until I went home.