Similar issue here. I paid more than $100 including shipping for 12 WW resin tubes. However I am not satisfied with the purchase because after few months of light use, the caps started to act wobbly and they are not sealing tightly anymore. Also, I found that resign tubes retain coffee smell compared to glass. So, I bought glass tubes with screw on caps from Aliexpress which are way cheaper and they feel better to me because they seal well and do not retain smell.

Have the plastic cellars. After a while, the o-rings dry out and the tops become very hard to remove. A very little oil on a paper towel rubbed on the o-rings gets everything working well again.

Should anyone be interested in purchasing spare o-rings, per Craig Lyn:
"The o-ring size is metric. 30mm inside diameter with a 2mm diameter."

Just reiterating something that was said before - in the glass cellars the rubber o-ring can dry out and make opening and closing difficult. I use a very tiny amount of mineral oil on the rubber and that helps a lot.