Is this a Honda S2000 OEM filter ?

[HTSS_TR]

2000-2005 Honda S2000 OEM air filter part number is 17220-PCX-003 and cost about $39 + Tax at my local Honda dealer. Below is the same part number(except the letter A) of the filter advertised on Ebay, it seems like an OEM filter. What do you guys think ? OEM or Aftermarket ? I underlined the aftermarket in the description. I emailed the seller yesterday and did not received any respond yet. Should I take a chance to save about $20 ?
Note: The seller has 76 feedbacks and they are 100% positive.

Title: HONDA S2000 2000-2005 AIR FILTERS PART# 17220-PCX-003A

Descriptions:
THIS AIR FILTER LISTED IS BRAND NEW IN BOX. WILL WORK ON ALL APPROPRIATE VEHICLE APPLICATIONS. AIR FILTER PART # 17220-PCX-003A. THESE AIR FILTERS ARE OEM REPLACEMENT AND FIT PERFECTLY IN THE FACTORY HOUSING. CHECK TO MAKE SURE THIS IS THE RIGHT PART FOR YOUR VEHICLE. PLEASE NOTE THAT PRICE IS 60 - 80% LESS THEN RETAIL VALUE!!!
HONDA S2000 2000-2005
Many other genuine and aftermarket parts are available from us. Give us a call from 9am to 5pm Eastern Standard time.

 

[Hounds]

You have a PM.

 

[Mau]

usually anything with an A added means it is an Acura part number.

Does the S2000 share it's air filter with any Acura vehicles? (you may be able to find out from the Wix look up guide)

 

[HTSS_TR]

According to Wix filter look-up Honda S2000 2000-2006 is the only one using this filter, the equivalent Wix filter is 42726. When I tried 17220PCX003A, it says "There is no information available on the part number you submitted."