Quarry Park has an on-site shop with more than 1000 discs in stock as well a s wide variety of disc golf bags, towels, baskets and other disc golf accessories.  The main brand that we stock is Innova, but we have a fair selection of Latitude 64, and a limited range of  Discraft and Discmania. We can take payment by debit or credit card in the shop. Main prices are as follows

Latitude Retro: £8
Innova DX: £9
Latitude 64 Zero: £9
Discraft D plastic: £10
Innova Pro and Discraft X plastic: £11
Latitude 64 Opto: £13
Innova Champion: £13
Latitude 64 Gold: £14
Innova Star and Discraft Z: £14
Discraft ESP/FLX: £15
Bags start from £11
Portable baskets from £75
Add £3 for dyed and glow discs
Set of 3 Golf Discs by DiscGolfUK £25

There are hundreds of combinations of different molds and plastics, so I have written some advice on what to buy when you start out.
Here are links to 3 of the main manufacturers, where you can find specific details of all their products.