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I don't think a scam, more a dead company and the site hasn't been taken down. I've looked at it several times in the past and nothing has ever changed. I may be wrong, I'm sure someone on the forum will know the score.
How long have you been waiting? This is DTECH or maybe Mason Electronics run by Nigel Downing
DTECH are at:
PO Box 26
I seem to remember DTECH being absolutely fine when I ordered an Arduino UNO from them in 2012 via EBay. I think the zombie website might be the cause of this. The Ebay account is also inactive. Perhaps automated payments are heading for /dev/null ?
It'a a nusiance because I really wanted the Comtech tx and logic modules. They seem to be non available and I cannot find any othey 23cm kits
https://www.minikits.com.au/electronic- ... ransmitter
Those Comtech units are from 20 years ago! Giles G1MFG did some logic boards CQTV192. https://batc.org.uk/wp-content/uploads/cq-tv192.pdf and in the Wiki https://wiki.batc.org.uk/Comtech_module
They are obsolete but there are probably hundreds of them sitting on peoples shelves. Try an ad in the Wanted section?