My brother’s first wedding was a proper church do, reception, etc. Move on around twenty years, his second was at the register office, which he and his fiancée walked to, it was that close, wearing their bike club leathers and colours, with close family. Reception was at the bike club clubhouse at Kemble Airfield, my brother rode his bike, along with most of the club who could attend, his wife rode on the back of a trike wearing a red leather bustier and long red leather skirt, and as the convoy of bikes arrived alongside the runway, the owner of the airfield did a low-level flypast in his black Hawker Hunter jet! It was a fantastic day, the weather was perfect, they had a blessing carried out under a tree at the club with my late mum and step-dad sat in front, the biker doing the honours was an army chaplain, also in his leathers with a big white cross velcro’d onto his jacket in place of his colours. Even the register office people said it was one of the best weddings they could remember. Don’t know the cost, but it was likely peanuts.
Bumped into a friend today who’s organising her own wedding, she’s a trained seamstress, she’s making a dress out of paper, (and I’ve seen one she made for an exam, it was stunning), plus a lot of the decorations are paper, and the reception is in the small events room belonging to the pub in the village where her parents live. Overall costs are going to be far less than the OP’s budget; imagination and creativity trumps a big bank account, or credit card limit every time!