Walmart sells a refined coconut oil with the brand name LouAna that is very cheap. When I bought it, it was a little less than $3.00 for 31.5 ounces. While I would not use this in place of unrefined Virgin Coconut Oil for therapeutic use, it is fine for topical applications. I would suggest coconut oil with a small amount of tea tree oil (also available at Walmart) as an excellent anti-fungal treatment for external application. It did wonders for a toenail fungus I have had for years. Tea tree oil also repels fleas and helps heal rashes.
By the way Trapper Colloidal Silver has really helped my persistent sinus infection, its good stuff too.