Rich,
Going by the responses on this site and the resonance in general concerning the Domanoff solution this device seems to be a good choice. I paid 145 € including shipping and Pypal fee. This price may vary according to the exchange rate USD to GBP or to EUROs. The price quoted on the Domanoff site is currently 160 USD.
If not already done so have a look at his site at
https://shipworkshop.com/products/tools/sm4 for more info on the different variants of his serving machine.
Hope that helps (HTH).
Trevor