-A spell's level is determined by its data byte in all circumstances, not by ID:
	Shopping ($47078):
		0248 1101 4118 497A 08E0 0000 80191A08
	Shopping 2 - Generic determination? ($454FA):
		0348 1901 4018 407A 0138 06E0 0000 80191A08
	Adding spell to your spellbook ($44F7A):
		875C 3B01 024A D318 587A 441E 21E0 80191A08
	($451D8):
		C75C 014C 3901 15E0 80191A08
	($4520C):
		6118 4C7A 013C