I bought a set of RollEeze wheels two years ago that were at least 10 years old then.
WheelEeze bought out RollEeze long time ago (or so I was told).
They are not very UV tolerant so I painted mine with just plain gray paint
with a plastic primer first...... easy to patch by melting in some of the same material.
Every season, it is a good idea to take the hubs apart and flush out the sand from the bearings.
NEVER oil them . . . it only makes the sand stick and not wash out.