If you needed another reason to not do business with OTC, take a look at the business hours on their website; it says "subject to the whims of the owner". This is not a benchmark of professionalism.
This is quite the ridiculous operation. After placing successful orders in the past, their joke of a shopping cart system from Yahoo now cites "irregularities" in the order and they, in turn, cancel the order. All while holding $120.00 hostage for 5-9 days. Other reviews indicate that they do not issue refunds, this could be an indicator that the business is facing insolvency and trying to gobble up as many funds as possible.
Also, their toll-free number seems to be a shell as all options immediately lead to various voicemails that prompt you to leave a message. This was the case at various points in a business day.
I once thought OTC had the best prices, but that's actually no longer true. So, I'd like to thank the ineptitude of this business as I've found much better prices elsewhere without the outdated Yahoo shopping cart. I'd recommend you do the same and let this business die a slow, lonely death. I also gave them a glowing review before my orders were canceled for truly inexplicable reasons, I rescind that review now after seeing how they're run.