Do not buy from eBay.
eBay = random people, random junk
Stop quibbling over $25 (or more) for a VCR that was $500+ when new. Trying to pinch pennies is what gets you into trouble.
Sorry to be blunt, but sometimes blunt is needed to drive home the point.
A non-TBC deck is vastly inferior, assuming the with-TBC unit is in good properly functioning condition.
I do not know off-hand is the HS830 has TBC, you need to research, ask questions, before randomly buying gear. The manual should have that information, and other PAL users here can perhaps give you the answer on that Panasonic deck.