ted:
it is cheaper to buy
/2/]https://www.progressiveautomations.com/ca/lc-202?gclid=Cj0KCQjwn-bWBRDGARIsAPS1svuvJgAL2H88ZsNxnRGcBIiWdQgAhqdqtSfcOogqt2_4OoD2fHI79wUaAl2WEALw_wcB#ig_lightbox2[gal]/2/
Cheaper is irrelevant. Those 5mm/5.08mm screw terminals won't pass 220VAC testing. 5 < 6.2 or 7.2mm clearance requirement.
OP mentions only 1 relay is for 220V. Personally I would use one of the 2/4/8 relay boards to drive an off-board (pre-)certified contactor.
Advatanges:
Pre-certified
Easily replaceable
220VAC is never on the circuit board.
Disadvantage:
Off-board - but if the unit is designed properly that effect can be minimized.