I recently bought a violin. It cost me £10 Sterling (about 15 dollars -US). It was second hand - or more - The string height was too high at the nut, but a small (modellers) triangular file soon took them down to just above the fingerboard.
As said by someone else - a bridge can be bought for pennies(well maybe a little bit more, but not that much). A violin tailpiece is only tied on by a bit of gut or nylon, and is easily replaced by the owner. Fine tuners cost a few pounds, whatever design theymight be, and orchestral violinists managed without them for centuries.
It sounds like your music shop are trying to fleece you! Try the other shop and see if they treat you properly, but if they don't, ignore the sods, and come back here for advice. There are mudcatters who can tell you from experience EXACTLY how to do ANY instrument repair or re-jig. There are websites (quoted and linked to in previous threads - can't recall which) where you can see diagrams of how to do adjustments and more complex operations to get a fiddle in good fettle.
The main thing is - Do you like the sound?
Answer YES - KEEP IT
Answer NO - If you can get a refund, do so. THEN Look in second hand/junk shops for a cheap old one. If you see one, take a fiddle player to test it out before buying.
DON'T waste your cash at the "We'll sell you something expensive" shop.
Quack!
GtD.