What is the typical wait time on a particular Khukri? a Sirupati perhaps.
Welcome to the subforum. If this is your first HI blade, I can almost guarantee you will be pleasantly surprised.
I recommend that you send Yangdu an email --
HIMIMP@aol.com -- explain what type of blade or model most interests you, and ask what is available. There are several models with functional characteristics similar to the Sirupati, and only Yangdu knows what might be on hand at any given time. Apart from model type, there is length and weight to consider. (HI always specifies overall length, not blade length. In my opinion, weight is at least as important as length, and it depends on your physical size/strength/fitness and what type of work you expect to do with the blade.)
If you live in the continental U.S., shipping time is usually 2-3 days (USPS Priority Mail). Yangdu handles the emails and shipments herself, and might not be available on weekends. Apart from that, her shipments are extremely fast, almost magically fast some might say.
Note: If you've been getting your information from the HI web site online store, you should be aware that only the most common models and sizes are listed there. There are many other models, and every model comes in a variety of sizes and weights, not just the one or two options listed at the HI online store. If you follow this subforum for a while (or read through Yangdu's posting for the past year), you will get a more complete idea about what might be available. Also, you will see Yangdu's DOTDs (Deals of the Day), which are posted here, at prices that are impossible to find anywhere else.