I'm not sure where to by them, but I cut some out of craft felt and they work just as well. You can get the felt in a variety of colors also.
I would also recommend making your own. Somebody on here did some with a pattern that I was thinking of trying to do myself.
If you get a price from Toyota on that part please share. I'd love to know what insane price they charge for such a small part.
You could order them from Autonation along with some oil filters or something else and possibly come out cheaper. All depends on shipping charges. I checked their website, one part was $3.50 something, the other was $4.50 something. Only two of the numbers you posted make sense when searching their site. Toyota Parts - Genuine Accessories | AutoNation Toyota Gulf Freeway Parts $27.99 is reasonable to me considering you are talking a specialized part for one application only. Such is the nature of the beast. Best of luck to you.
Make sure you glue them in. Most likely they got suckered up by one of those super vacuumsat your local car wash
I bought 3 of them. It's literally some of the cheapest foam available. You can probably find better at the local arts and craft store. The sides are the same shape (L/R). Good luck. Image1 by CoolPrius posted May 8, 2016 at 2:19 PM