I did a quick check of online pharmacies today and below is composit of what I found about the best ones. There are tons more, but they either were not very easy to navigate, or didn't list prices. (The logos link to the actual sites.)

	Cortef	Florinef	Solu-Cortef	Phenergan
	Cortef 5mg 30/$7.99 50/$11.59 100/$20.49	Florinef .1mg 30/$23.19 50/$36.99 100/$70.89	Solu-Cortef 100mg (act-o-vial) 1/$5.89 2/$7.89 3/$9.79	Phenergan 12.5mg suppos 12/$45.29 24/$86.89 36/$130.99
	Cortef 30 tablets 90 tablets Tablets 5 MG $7.82 $19.45 Tablets 10 MG $12.30 $32.90 Tablets 20 MG $21.53 $60.14	Florinef Tablets 0.1 MGts 30 tablets 90 tablets $19.96 $59.89		Phenergan (12 12.5 MG Suppository) 1 box 3 boxes $41.97 $121.72
All orders containing prescription items can only be shipped free of charge via the U.S. Postal Service standard mail. Please allow 5-7 business days for delivery. Prescription items requiring refrigeration will be shipped overnight, also at no charge.	Cortef   MG Price 30 Tablet 10 $7.87 90 Tablet 10 $21.87 30 Tablet 20 $12.87 90 Tablet 20 $38.87 30 Tablet 5 $3.87 90 Tablet 5 $11.87	Florinef  Quantity mg Price 30 Tablet 0.1 $16.87 90 Tablet 0.1 $49.87		Phenergan  Quantity mg Price 12 Suppos 12.5 $26.87 12 Suppos 25 $30.87 12 Suppos 50 $36.87