I am not a fan of this opener for due to people giving this exact type of prize frame response. It immediately puts you in the seller frame and she is the buyer. I prefer, a similar but much more effective opener of "so cute, I almost don't want to ruin you."

Or if you have to use this type of opener change it to "alright fine, I'll be your boyfriend."

But you're already in this pickle so normally I would troll her or flip the frame based on that response something like:

"well I don't like to brag but I got a chipotle rewards card, so extra guac is on me."
"well I drive a 02 Corolla and it only breaks down 3 out of 4 times; so I will just get started on the wedding guest list now" (only do this if you atleast a reasonable car (doesn't need to be super nice but just can't be an old shit box)

Then she will most likely give a playful smart ass comment back and you "don't get too excited now, that (insert rewards card or corolla) is staying with me in our prenup). then just move off of the topic from there with a "give me some of the basics" line or "how is your wild Wednesday going thusfar?" or "so what are you looking for on here."

In general you are far better off with an opener like "hey I like your style and (insert something about her pics, usually I say cute pup, sexy tattoos, or in this case I would say and your interior decorating skills to make a joke about her back wall being plain AF in that pic."

Or you could just make an observation on her pics overall.

"This isn't a gf store silly. Ain't buying a toy or something. Is that your cute way of playing hard to get"