Ticketmaster seats are 100% guaranteed. Even the red, recycle ones. You get a brand new bar code, and the ticket has your name on it. If something goes wrong, the person you yell at is right on the first floor of North Station (where TD Garden is) in the ticket window. This is the absolute highest level of safety. As long as the order goes through their system, you're good. Ace Tickets has a 200% Guarantee. If your ticket is invalid, they give you an "equivalent" one or better, or you get double your money back. That gives them the impetus to find you a ticket if yours is, for some random reason, invalid. I think they buy their tickets from known STHs or actual ticket brokers in advance - the STH can sell the ticket months in advance and Ace holds on to it until it sells. It's the opposite of consignment - if I had tickets to sell, I'd email Ace, and they'd say whether they want to buy them, and for how much. If I said yes, I get the money then and there - and now the ticket is Ace's problem. That said, "I" would have to be a highly trusted, regular vendor for Ace, I think. I would call this "high-to--very-high-medium" level of safety - again, with 200% of the money on the line, they are very motivated to get you in. Their office is located right across the street from the Garden - near the T stop, easily accessible. StubHub has a FanProtect Guarantee. You either get in, or you get your money back...or you get store credit (!). Their choice. StubHub literally is consignment - I post my ticket, and you buy it. You have to trust that I won't use my ticket. Of course, to guarantee that trust, StubHub has my credit card, and if you say my ticket is invalid...they hit me with a huge fee. If you buy a ticket and I later decide that I didn't want to sell it and rescind it...again, huge fee. Plus, both of these instances will cause StubHub to review my account and perhaps determine that I should not be allowed to sell on StubHub. They probably wouldn't let me relist the same ticket over again - that's just lame. I consider this "high-to-medium" safety - I haven't bought from StubHub much lately, but I've only had problems maybe once or twice 5-6 years ago. Both times I got in for no charge, but this wasn't a SCF game. They have no local office - it's an 800 number you have to deal with.