What's the cost of an uncovering?

Not necessarily. It all depends on how much the tooth's shape changed  after the root canal therapy. if the endodontist only made a small occlusal opening, you might not need a new impression. Your dentist should be able to check the fit before cementing the crown.

The most important factor in cosmetic treatments is a cosmetic surgeon and the second important part is material. So If you are not satisfied with your work, do a little bit of homework and visit a good cosmetic dentist. Now come to material, for veneers Emax is the best, as that gives a...

Bulge in gum is not normal, Most probably there is an infection remaining from root canal or gum treatment. You need to see your dentist asap to evaluate the tooth. Hope you feel better soon.