The Extreme Humility
icon belongs to the Great Feast set. Each of the icons in the Great Feast set, when purchased individually, are sold for the standard price of an 11 x 14 enlargement. The entire set of Great Feast icons, when purchased as a set, comes with a discount. See here
for 11 x 14, see here
for 8 x 10.
The 8 x 10 mounted icons are the standard size. All enlargements besides
the 11 x 14 size, and reductions, listed in the drop-down list, are
special orders, and require up to four weeks to complete.