TA cloning vector

[Stephen Billington]

Does anyone know of a company that still sells TA cloning vector (with
an A overhang) without the kit (cells, ligase, dNTPS, kitchen sink,
etc.)?  All the companies that used to sell them (Clontech, Invitrogen,
etc.) have gone to the kit format and at >$250/20 rxns, the cost is
prohibitive.

We have tried making TA vector as per the Biotechniques protocol of a
couple of years ago, but have not had much success.

TIA

SJB