I want to watch the first 3 seasons of Alias, but don't want to buy them. My local video rental place doesn't carry them. Does Blockbuster B&M? And can you get all discs at once, or is it like Netflix where you get 1 disc at a time? Thanks.

Blockbuster will have you rent one disc at a time. IMO, you're better off buying it at the lowest possible price, watching it, and selling it on eBay.