If it is The production cost not the development cost. then I can say it is a price that is rather high but can be Coursed because of the high cost for Getting the machinery ready. 1000 Pices is a very low quantity let’s say the preparation of the Filling line takes 4 Hours and 2 persons make 8 hours technical persons to pay for + 1 person from the filling team maybe to make adjustments etc. If you say a Technician Costs 150€ an hour. that makes already 1200€ only for the Preparation of the Mashinerey to fill your 1000 Pieces.
If you know to calculate that the filling line will maybe fill 15 Pices per min (with that small scale you will not be faster) that means your filling process will take 1h 6 min let’s say they calculate 2 h because the machine that puts on the label will maybe not work directly very good and so on. for the filling process you need 2 Persons on the filling line 1 Put on the new Bottels 1 to Put the BOttels into the Folding boxes they cost 80 € per hour makes additionally 320 € for the personal of the filling it self.
Energy etc on top let’s say another 80€
makes under the line 1600€ just for the filling cost.
The same goes for the Production of the Bulk let’s say you have 50 ml bottles make 50 kg production. you have 1 or 2 hours for Weighing the Materials (depending on how many ingredients are inside) 2- 6 H For production if you have a heating and cooling process. In that time you have a Production person standing next to the machine lets say 100€ per h making worst case 800 € on top.
So now you have 1600+800= 2400 € if you split that on the 50 kg bulk 48€ per kg
Additional Cost will be Organization in the background (ordering Raw materials; Analytics; Putting your Formulation into the System; Etc) let’s say makes another 200€ per kg. just for time and Personal.
Let’s say they want to make moony with that they will have to Charge 25 % on top makes already 312.5€.
Now it depends if the Price is ok or not.
Did you Pay them for the Development of the product or is it your Formulation? if so then it is too high. If they Developed the Formulation without payment the payment will just be included in the estimated production Values. Product development will cost around 5000 to 10000 € depending on the complexity and the Person that is doing the development. if you Calculate that into your 100 Pices Price the cost will explode of course.
For the Stability Study, it depends some companies like to separate all possible activities so the customer can decide if they want for example use an external laboratory for Stability studies. In general, I would say yes, stability will be part of development but the costs will then just be integrated into development costs and then depending if you paid development separately or not included in the Kg price.
hope that helps