On average how much would a half and also a full syringe of filler for lips cost? Would like to ensure I'm not paying too much.

$1000 does not sound "off" considering you mention treating your forehead with botox as well as having lip fillers. First and foremost always use a reputable plastic surgeon so you know you are safe. Be careful of cost shopping, if it's too cheap most likely they are NOT board certified plastic surgeons nor trained to our standards. 

Prices can vary depending on your location and the expertise of the professional. Our offices in Utah charge $11 per unit for Botox and $600 for Restylane Silk. We typically offer specials when done by our Nurse Injectors and patients can save with Brilliant Distinctions on Botox and Aspire with Restylane Silk.

I suggest seeing an expert someone with skill and expertise you will pay more for but typically get a better outcome.  Best, Dr. Emer.

The costs of these products should be very transparent for the patient. Often the practitioner will have their prices per unit although some like to list it by the treatment area. Either way it is something we discuss with the client before treating them so that they have a good understanding of what they are receiving. For what you have described it is not unusual for the cost to be in the range that you described. It is understandable that as a student the costs would seem high. Perhaps you could consider other treatments to help you achieve those qualities that you are seeking. Sometimes these can be achieved by working with an aesthetician especially if you are a younger patient who has not had sustained sun exposure of skin damage.

Botox in our office costs $11 per unit, and if you had only your forehead done you might have overpaid. For lip augmentation I like to use Juvederm Volift, which is one of the best fillers in the market, Vycross technology from Allergan. The cost is $750 per syringe, and you can have half or even 1/4 syringe. We of course don't share syringes between patients, we divide the syringe in small portions in a sterile fashion, downloading the product in smaller syringes. This is a very common safe practice for mini-lip injections.