I agree with many of the other posters here. Buy some good wire, end insulators and a good center insulator and roll your own dipole, friend. Making your own will be fun and educational.
End/Center insulators - be creative: you only need a few of these but you can make a bunch of antennas. lol
Together the above items are about $72.00. You could get 'em cheaper from other sources but you mentioned Amazon specifically. Sorry, forgot the feedline. I'd recommend 450 or 300 ohm ladder line, but depending on how you cut the dipole and what bands you want to work you can use either one. I'll leave that up to you.