ah... did u buy this A80 recently? i thot canon is giving away a tripod for every purchase this month?
anyway, do u wish to upgrade to a prosumer or DSLR in the future? if so, get a reasonably good tripod that can take the weight. if not, any $20-30 tripod will do. check out buy/sell or yahoo!auctions? these places have a lot of tripods for sale. from branded ones like manfrotto & gitzos (going like $100+++ for new ones) to the nameless...
oh... like dat ah. suggest then u go for a reasonably good ones from manfrotto or gitzo, which can take a couple of kilos in weight. tripods mainly comes in 2 flavours - carbon fiber (light weight) and other metals like aluminium. its a trade-off bet these 2. CF tripods are much easier to carry ard, but u pay a premimum for the lesser weight. the others are much heavier but cheaper, compared to the CF tripods. suggest u go to CP and test out the tripods. CP has a good selection. bring along ur A80, and if u can, borrow a prosumer/DSLR to test so that u can find one that can support the weight.
oh yeah, make sure the tripod is stable too, once set up. some tripods are so light weight they are in danger of toppling over once the wind blows or when u use a cam with a long lens. so, must must test first b4 buying.