the price of seeds has to do with the company, serious seeds has a good rep so they can charge more for their products, in my opinion fem seeds arnt worth the cash they ask for them, id rather buy a pack of regs and pick a super momma out myself, ive grown a quite a few fem seeds from different companies and sum have turned out great sum have hermd on me, the best strain ive grown outa fem seeds was dna genetics sour cream
Can I just say, even though your advise is good and I'll not dispute it, I think sometimes people buy the feminized seeds because they get a sense of security about buying labelled feminized seeds. I buy feminized seeds because I feel they will benefit me more in the long run than buying regulars and not having a clue.
I'm sure most people will agree that fem seeds are a good way to start, simply because 99% of the time you get females, unless you buy from companies that are notorious for bad seeds.
If you want good budget seeds then I recommend buying from the following.
Female Seeds- I recommend trying the C99 and Lemon Kush, I'm currently growing C99 and germinating a Lemon Kush tomorrow.
Dinafem - Even if they do claim to have things they don't, they're products are still decent and I'm sure you can find many good reviews on many of their seeds.
G13 Labs - I've smoked a few of their strains, including their version of Cheese, Auto AK and Pineapple Express, Hypnotic is on my radar though!
Sweet Seeds - Green Poison is a very good smoke and knocked me on my ass for 4 hours after 2 joints.
Delicious Seeds - They do some good budget strains which I've read are decent such as Black Sugar Rose.