How do you feel about the increase in sale prices for Latias & Latios GX Full Art? Are the higher prices warranted? Personally, I love the artwork, and am happy to see an alternate art card from the Sun & Moon Era compete with the SW/SH Era.
I wanted to provide some recent PSA 10 sales data. As you can see below, the prices have creeped upward quadratically, meaning a substantial (non-linear) increase in recent months. In my opinion, this is a great example of organic interest and demand driving graded sales.
The straight blue line is the quadratic regression line and the dashed blue lines are the 95% confidence intervals measured from the mean. When compared to a linear model, the quadratic model had a better fit as determined by the R2.
Check out the historical data available on sites like TCGFish too.
Financial Disclosure: I do not own this card, and I do not have a financial position in Team Up.
The other alts from Team Up (Gengar & Mimikyu GX, Magikarp & Wailord GX) have also doubled up within a six-month period. It somewhat makes sense with their populations relative to the alternate art cards in Sword & Shield.