Hello Tim,
Do you prefer to purchase OEM oil filters for your Avalon? If so then you can either buy an OEM filter from your local Toyota dealership for $5.41 or $4.01 from toyotapartseast.com.
I would advise sticking with the OEM filter because I've had too many issues with the way after market filters fit on my Toyota vehicles. OEM filters are just as inexpensive as after market units when procured from discounted OEM Toyota parts sites so there's really no valid reason for one to go with after market filters. (unless it's a matter of sticking with the parts a local oil change place uses)
Cheers!
www.toyotapartseast.com