digi is a great investment. sure it costs more, but you're saving money on the film you would use. as for upgrades, you don't have to if you don't want to, never seen a cam that HAD to be upped. buying on
ebay, i say is a nono. usually two categories of seller: 1) scammer, leaves out key details about damage to the camera. makes a just passable description and reels you in. responds to furious complaints with a child-like shrug of innocence. 2) the "OMG THAT's AN AMAZING DEAL!" package seller, sells large amounts of equipment bundled with the cam. if you don't read the fine print, you'll be receiving a camera body, the tripod, lenses, bag, etc. are just "compatible", or must be purchased with the camera but seperately (i.e. auction price is for camera, accesories must be paid for by themselves). Of course there are reputable, honest sellers, but they're hard to pick out. i recommend that you buy from Ritz/Wolf,
B&H and places like that online.
ebay is too risky.
g'luck.