There is no place that I know of to buy obsolete chips in LV. I live here and I have been looking for them with no luck. There was at one time a couple of places but they closed for lack of business, I suppose. You might find some pawn shops off of Fremont St. downtown and other locations around town that have them, also antique shops, I have checked them out and the prices they ask for them are way way out of line, so do not waste your time at those places. Good luck, however, you never know you might run into some here.