My guess is that this will cost a lot of money if you just want to buy the lipsticks and never do business with that lab again - probably close to the cost of buying the equipment to make the prototypes yourself.
Seriously - 100 pcs of lipstick should take about 2-3 hours, start to finish, for 1 technician with a 24-place mold and a hotplate. Lip gloss, even less time and equipment.
However, that being said, there is much value to be derived from having the product development lab of the contract manufacturer that you will be using for your production runs make the prototype samples. That way, the manufacturer will already be acquainted with whatever little quirks your formulations have when it comes time to go into production. Most contract manufacturers will make prototypes at no charge, or will charge a fee that will be refunded when you place your first order.
What size production runs are you anticipating, or haven’t you got that far yet?