If it’s silicone, the mold should be fairly inexpensive no matter the country. If you look online for silicone cost you should be able to find a price / kg. Your CAD program can give you either the weight of the part or you can calculate it using the volume of the part on the density of silicone. Maybe double the price of the raw material and you should have a ballpark idea of part cost.
Quotes will likely be all over the place and before you are ready to commit to an order you shouldn’t burn people’s time (or yours) trying to negotiate.