Quite the hot topic! A good vet is worth what they charge. I have a vet in the family (horses and cows mostly :-( ) She just set up her own practice and that means a 2 million dollar loan to do that. Add the cost of education and loss of income while in school it is quite a debt will she pay it back yes absolutely does she over charge I have to say no, I have 2 years less schooling than she does and my business was set up much far cheaper and I still charge more an hour.
I saw my vet today a check up on one of the rescues (I don't own her and am not likely going to be her 'forever' home once she is well and healthy she will find someone whom will care for her and look after her properly. I agreed when I took her in I would look after her that mean a trip (or 4) to the vet. My vet saw her today spend 40 min with us and we decided that everything seemed to be on the mend. I was charged a reasonable 60$ for that. I trust my vet and lean on her experience to keep my animals and animals I am responsible safe and healthy. I do the same for my mechanic for my car I pay him 70$ an hour why should I not pay my vet 100$ especially when she is right more often!
There is no web site that should be taken at face value all information should be cross referenced and compared before taking it as truth. The problem with web sites is often bad information and worse that information being quoted to and from other sites.
The fact is drugs change frequently, what was used commonly 10 years ago is not used at all today. Taking ANY information on drugs from a web site is sketchy as it is likely out dated. There are so many types of internal parasites that are possible with WC animals that no one drug will work anyway it is a handful and there could be cross reactions and complications with using more than one. A vet will know this and understand the complexities of drugs. Web pages are far too simple to be complete. look at ASA dogs can be given it but cats it is a poison. Every vet knows this but my vet sees 5-10 cases of salicylate toxicity in cats every year. There are a handful of web sites that talk about ASA to cats... wrongly. You are trusting your animal to some person whom bought page mill? seriously???