Head over to the dedicated weight loss injections board for all the info, advice and support you could ever need.
in terms of keeping costs down privately, as the previous reply said you can take advantage of new customer discounts from the long list of registered pharmacies. Monj is great when you are new as you can he sure pharmacies listed and linked there are legitimate. I’ve used with no issues - MedExpress, swift doctor, Chemist4u, Weprescribe and pharmacy2u.
when you said you’ve heard some places run out, that was mainly a temporary issue caused by the panic and stock freeze in August due to the surprise price hike. It’s not very common, before that I heard occasionally that people couldn’t always get the high dose pens in stock. Progressively (anecdotally) over the last 6 months it seems like very few people go right up the doses, because they get enough effect from the low doses - I’ve never been above 5mg - the second dose) and almost at target - this helps with cost.
Many of us economise even more by using the additional liquid in pen for an extra dose with an insulin needle, and/or ordering higher dose pens and taking smaller doses. However that’s not something I’m recommending - you should read all the info around this on the board and make your own personal risk assessment about using pens for longer than recommended.
it’s the best thing I’ve done for myself in a long time, it may not be for everyone but it’s been life changing for me and so many others.