The most common is the Uberti, which is imported by several companies. I don't know that I have ever seen a new rifle sell for less than $1,000...
A couple of years ago Winchester re-introduced the '73; it is being made in Japan by Miroku. They don't have as many variations in caliber, barrel length and styling as does Uberti. They seem to be a little more expensive than the Uberti