Please correct me but isn't 22.7*64.0mm>18.8*61.4mm so the second one has less volume? and less weight?
By the look of the bottle, one is mefferts lube without the label, and the other is maru.
Assuming D*H is diameter times height, the maru is 871, and the other is 1270.
1270/17=74_____$1.99 - the none maru is cheaper.
871/11=79______$2.80
Also, Ii is likely that those dimensions are shipping sizes, not the dimension of the actual product. The above calculations are in case it is the product.
What are the most common OLLs? Is there a chart of some sort?
OLL wiki
More OLL
According to the second link, the majority of them have a 1/54 chance of popping up, while a few have a 1/108.
But I am not sure if that is right, considering there are 57 different OLLs, shouldn't it be 1/57?
My suggestion, if you are looking to learn the most common ones first, then do a lot of solves, and see which ones you see a lot.
Those may not be more common, but you recognize them easier, making them easier to learn. That's what I do.