The €29.95/mo offer is for an older i5, the pricing for the 2018 version isn't announced yet: https://www.remotemac.io/pricing
Re:RemoteMac.io – Dedicated Mac mini
by orhanhenrik on Thursday November 08, 2018 @04:00AM
(#18405156)
1249 is for the expensive 2018 base model. The 29.95 price is for the cheaper old (not 2018) model. It will definitely be paid back much faster than that.
€1249.-[0] divided by €29.95/mo plus other infrastructure
[0] https://www.apple.com/nl/shop/buy-mac/mac-mini