Own potatoes put out to chit - when? how many? photo?

Bought seed potatoes from Patch:

• Celebration - 10 tubers - £6.99
• Sarpo Axona - 10 tubers - £6.99
• Foxton - 10 tubers - £6.99

Total with discount and shipping: £23.97 - £0.799 per seed potato.

Arrived Thursday 22nd Jan.