If it is indeed a CDX-5 and an Alpha 8, it is a very nice reg - good value for the $$$.
This was my first reg, until somebody stole it whilst in the trusted care of AA - still waiting for the cheque that will never come, but I digress.....
I like it so much, I just bought the exact setup for my pony, and for my wife. Reliable, inexpensive, an easy breather. The reg I bought to replace my stolen one, BTW, was the CDX-5 paired with an Omega II, which is really an awsome reg - I think it is discontinued, though.
LesiurePro had what you are looking at on their site for around $150 - that's where I got the two sets recently.....
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Friendship...having neither to weigh thoughts nor measure words, but pouring them out, just as they are - chaff and grain together - certain that a faithful hand will take and sift them, keep what is worth keeping and with the breath of kindness blow away the rest.