Consider
Houndoom #133 from Obsidian Flames sits in borderline territory for grading. A 23% Return on Grading comes from the spread between $0.13 raw and $111.00 graded. Only send it if you're confident the copy is a genuine Gem Mint candidate.
Among the 68 cards in Obsidian Flames with PSA 10 sale data, Houndoom ranks 20th for Return on Grading and 20th by PSA 10 price. Of the 8 Uncommon cards with PSA 10 sales, it is 3rd for Return on Grading. The median PSA 10 in this set sells for $49.38. 13 of the 68 clear a 100% Return on Grading.