We are a super-small operation, yet we have a HUGE store relative to the number of staff members we have on hand!
Keeping inventory levels current would require a massive amount of labor that we cannot perform at this time. It would require us to check over 100,000 individual SKUs on a daily basis, just to make sure inventory levels are current. Due to inconsistencies with the data streams we are provided, this is an extremely difficult process to automate.
So, for now, we only maintain up-to-date inventory levels on a handful of products, and keep backorder lists for everything else.
For the record, this is also how the vast majority of wig sites on the web operate, regardless of size – and all for the same reasons we’ve listed here. ;)