I found this on the Tottenham web site.
3rd KIT SALES
Our chocolate and gold kit has proved a sell-out success and appears to be the Club's fastest-selling third kit ever.
Commenting on the sales record, our Head of Retail, Victoria Howarth, said: “When we pre-order for the third kit, we generally estimate around 3,000 and are usually left with a quantity unsold at the end of the season. This time, hoping it may prove a more popular choice, we ordered just under 5,000 and they have flown off the shelves.
“I should like to clarify the misconception that this kit was ever intended as a ‘limited edition’. That was never suggested, the only limiting factor in all this was that our pre-order was for a set amount as with any other third kit. We have re-ordered a second quantity and will let everyone have the on-sale date as soon as we have it confirmed.”