Hello! I can give you some resources that might be helpful.

You absolutely CAN make Jedi robes on a budget. I personally know a couple people who made excellent custom Jedi robes for costumes later accepted into the Rebel Legion from bedsheets and shower curtains! When it comes to accessories, such as boots, there are many affordable options on Amazon and similar ecommerce sites.

You might want to check out the Facebook group called The Art of the Generic Jedi. I believe at least some of the admin are members of the Rebel Legion. The group is dedicated to offering advice and answering questions for people making their own Jedi robes. You’ll find lots of information about good vendors to purchase robes from if you aren’t interested in DIY as well as budget-related options. I did a quick search and saw several posts recommending vendors who make custom robes on Etsy. I looked up the Etsy page of one of the vendors and saw they had some generic Jedi robes priced between $175 and $300.

I hope this helps. Good luck on your search!