I was debating posting in books instead as this volume is not a Light Novel, my e-reader said 877 pages.

I assume you read the reprint that put the first two volumes into one. The next volumes are more in line with the usual page length since they cover only one volume each.

Also, usually you get a sticker upon your third visit to FUNAFUNA World but Lemmy doesn't have user flairs, so just make a mental note and feel accomplished.