tirzepatide is the generic chemical name for Mounjaro, so it's exact rather than closest. Except that it won't come in an autoinjector. You'll get dry-form in a kit of 10 vials (each vial containing the number of milligrams stated in marketing description).
You'll need to learn about and separately acquire the specific liquid you'll use to reconstitute the dried ("lyophilized") medication in its vial, syringes of the right specifications for both reconstituting purpose and subcutaneous injection, and alcohol wipes (or similar) for your skin and for the vial tops before every use (including at reconstituting).
Most of what's discussed on this forum is based on USA availability, so as you search, read and learn, keep your own domicile in mind. Once you're permitted to ask your own informed questions, specify the country you're in ... locals can best advise you how to procure the accessory supplies you seek.
Re pricelists: MOQ means Minimum Order Quality, which usually means how many kits you need to buy for free shipping. Lists are almost entirely in USD. Buying from a CN (China) warehouse can take a widely varying time for delivery (2 to 6 weeks is perfectly normal), so don't let your on-hand supply run too low.
A few reputable vendors have UK & EU warehouses, faster and more certain but a bit pricier (although still radically cheaper than what you've probably been paying for name-brand). And there are many non-reputable vendors, so spend time to choose carefully.
You'll also have to learn how to pay with cryptocurrency, which is its own whole often-frustrating learning curve.