Hi there,
Thanks for getting in touch, you are able to apply for visa's yourself of course and that is absolutely fine to do so. The reason we charge for them is that we have a dedicated member of staff who hand delivers all the documents, waits at the embassy while the visa's are organised and validated and then delivers them back, we also include a full check of all your details prior to sending the visa so it will all go smoothly at the embassy. We then deliver your passport and relevant paperwork back via Special Delivery. I hope this helps,
Kindest,
Ben