How Often Do Fossil Pokémon Cards Get Bumped from HGA 2 to PSA 7.5?

The short answer is: very rarely. Cards graded by HGA at a 2 don't typically get submitted to PSA and jump to a 7.
Recent expansions and newer Pokemon TCG releases

The short answer is: very rarely. Cards graded by HGA at a 2 don't typically get submitted to PSA and jump to a 7.

BGS 7.5 grades on Solgaleo cards are moderately common in the graded card market, but they appear far less frequently than comparable SGC 5 grades when...

Pre-release Mewtwo cards do see grade improvements after regrading, but not nearly as often as collectors hope.

Lv.X Articuno cards experience higher grades after regrading roughly 15-25% of the time, though this varies significantly based on the card's condition,...

There is no publicly available data tracking how many PSA 2 Lv.X Lapras cards have been resubmitted to SGC and received a 7.5 grade.

CGC and BGS employ fundamentally different grading standards and evaluation criteria, which is why a card receiving a CGC 1 often receives a lower...

SGC 1 graded Vaporeon cards rarely receive HGA 6.5 grades when submitted for cross-grading, though the frequency depends heavily on the specific card,...

HGA 7 Mewtwo cards receiving TAG 6.5 grades is a relatively uncommon occurrence in the Pokemon card market, appearing perhaps 5-10% of the time among...

Celebrations Pokémon cards do occasionally receive higher grades from HGA after being rated by CGC, but it's not a common occurrence—you're looking at...

The likelihood of an Evolutions Pokémon card graded HGA 7.5 being bumped to PSA 8 depends heavily on the specific card, its condition details, and market...