I agree with jmik26, recoup is the secret to boats. That inflatable will never even sell, would you be leary of a used inflatable, even a top notch like an avon or zodiac? Get an aluminum anything, I started with a canoe, then a rowboat, then a drifter, then a couple different jonboats, now a 115 hp flatbottom sled that runs in 2 inches of water if ABSOLUTELY necessary. Just rough estimation, besides gas and licenses and everything that goes into the boats like life jackets and depth finders and radios and such that you keep and move into the next boat, my total cost has been 6500 amortized over twenty five years of being able to easily get to where no one else goes. And I still own 4 boats!
My advice: don't even look at inflatables unless free, (they will be eventually) get wood if you want to spend alot of time keeping it nice, and then keep it nice, Fiberglass is tempting and can be a good way to get a boat with a decent motor to keep for the aluminum hull you will eventually move up to. Better yet, get an Aluminum jon boat in the dead of winter after goose season is over, use it alot, then sell it years later two weeks before duck season starts. Have fun, stay safe.