I'll think that you will find that TD haven't listed the V3 or 210 in stock ever all the kits have been sold through shops.
Although I think that delaying the release of the 210 and V3 until full part and spares back up was available I also think that with working on so many projects it may have also been an issue of cash flow. Perhaps they spread their butter a little thin.
Fabulous products just possibly need a little more forethought or market research prior to release. it is too late to change what has been but one would hope that they learn from this for next time.