Read the title and came here to say thriftbooks, lol. Although they've gotten a bit greedy over the last few years, sadly. Some books are on Amazon for cheaper

Read the title and came here to say thriftbooks, lol. Although they've gotten a bit greedy over the last few years, sadly. Some books are on Amazon for cheaper and they're brand new. Especially tech books. For example, Hacker's Delight is $56.70 on ThriftBooks, and $51.36 on Amazon (with one day shipping, if you're a prime member).