I have a gap. could it be fixed with only two veneers?

Possibly: Depends how large the diastema is. Consult with a trusted cosmetic dentist in your community.

Possibly: It depends on many factors. Some are gap size. Location, bite, etc. Bondings, veneers, crowns, fillings, are all used to close gaps! sometimes orthodontics is needed also.

It varies: Veneers, when done by an experienced cosmetic dentist, will close most spaces nicely. It generally takes at least 2, but if the space is quite wide, it may take 4 veneers to make it look nice. The fee is not less than $1400 and generally closer to $2, 000 per tooth.