vactrols aren't massively expensive - they are compared to a lot of op amps - but not compared to 2614s that are in many vcas etc these days (mutable use them extensively for example) or to stm32 etc chips (MCUs) - there are some restrictions due to what they are made from (they're not RoHs compiant for example) but it can be done reasonably cheaply - look at the dplpg, for example - 2 vactrols and reasonably priced
one point to note is that vactrols are all (as far as I know) through hole - which does add to the cost, especially if the rest is smd based - adds more work that is probably done by hand, compared to smd which will be done by a robot!
at retail prices in uk vactrols are roughly between £3 and £8 + vat - 2164s are about £3 + vat iirc and stms can be over £10 + vat and most mutable modules (built in france) are in the £180-300 price bracket
the 200 series, which the tta/buchla modules are, never had the preset-programmability, that was only in the later 200e series - which are eye wateringly expensive and still being manufactured by BUSA
i suspect the tta/buchla modules will almost definitely be manufactured in thailand where tta are now based - so labour cost is way lower than BUSA - as I think they are actually built in USA - and I'm pretty sure they will be mostly smd based as it's quicker and cheaper for pick'n'place manufacturing - and only the vactrols, panel furniture and finishing will be done by hand
I think the buchla/tta modules are a fantastic development
great for eurorack users - add a bit of authentic buchla for not much cash!
I kept looking at the 208c - but I'm pretty sure I'll just get some of these instead - much more fun and interesting to buy a module every so often than to save up and buy a 208C - 200 is much easier to find (even repeatedly) than nearly 3k in one go!
the only people who seem to object to them are existing buchla users - and the main argument is this is not what Don wanted - true, but in his lifetime the b-company were not making cheap ass clones of everything and anything they could lay their grubby little hands on - faced with that or this I think Don would have (if he were alive today) have gone with licencing over the alternative due to it, being the lesser of 2 evils...
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities