Need help trying to find if my sub is 2ohm or 4ohm?

That price is very cheap for 2 10inch subwoofer. Not to bring you down but Boss is not a very good sounding brand. google 2 omh vs. 4 ohm. You usually dont have to know the difference the wire them standardly biut try google the model number on the back of one of the subwoofers. That will give you all of the specs you need.

Are they still in the enclosure? If so you can take em out and look at the magnet, or basket, and it should give you the model number of the sub. That way, you can also look up the specs on the subs. Or like previously stated, get a DMM and measure the ohms. You do this my taking the red and black post, and touching the red to the red and the black to black on the subs termianls. This will give you the read out.