Edited June 6, 2018
at 09:50 AM
Oculus Rift available via Best Buy's eBay store for $319.20 with the PICKDADSGIFT code. Code available until 7pm PT on 6/6/18. My price with NYS tax was $354.61 for a savings of $79.80, with free shipping.
If you add an extra sensor from the Best Buy eBay shop at $59.99 then in NYS your tax will be $40.74 for a total of $407.93. Savings of $91.80.
Please note, the Newegg store has the same price and in most states doesn't charge tax. However, they also have no return policy.