Sorry about the photos. I hope they'll suffice.
Vendor Pics: http://kyonagomi.ocnk.net/product/91
Clay not porcelain, glazed inside out. Fine craze.
Yuzamashi is +/- 120ml
Hobin is +/- 160ml to the brim
I do not have the box.
Offer is for 85USD + shipping from Taiwan (roughly 15 to 30usd depending on how you want it shipped)
Somewhat surprised this is still available. Looks like a nice and complete set, though not quite the typical Arita yaki. Honestly reminds me of a set of Tenzopan Hagi cups I bought, then swapped with Chip.