What Does Walmart Charge for Sildenafil 100MG?

Question:

I buy most of my prescription drugs from the local Walmart, which is convenient because I also shop there regularly for groceries and other products. My doctor recently prescribed Viagra or sildenafil citrate, which I guess is its generic form.

I would like to know how much Walmart usually charges for a 100-milligram tablet of sildenafil. And are Walmart’s prices uniform across the nation, or do they vary sharply by geographic region?

Geoffrey W., Briarcliff Manor, NY