How much money do you need for a VR set?

Excuse me, but I'm curious about the cost of acquiring a VR set. Could you please elaborate on the financial requirements for such a purchase? Are there different tiers of VR sets, each with varying price tags, or is there a standard price range that most consumers tend to fall within? Additionally, are there any ongoing expenses or additional costs that one should consider when investing in a VR set, such as software subscriptions or accessory purchases?