If you guys are talking needle tip, you can get 'em on eBay with either US shipping or China. I just got some (well my wife got 'em for me for the holiday), if she used my watch list it could have been either

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Several sizes too, mine were 10ml (pretty soft) and 5ml (stiffer) with tamper evident caps (normal tip inside) and needle caps that are pretty much interchangeable save for the ridges on the tamper bottles (to break the tamper evident ring connected to the cap). The tamper caps, I believe, are whiter possibly American and the needle caps are clearer (natural) and smaller (probably Chinese) but who can say, they all hold
juice and work for me.

I got 'em in batches of 50 and if I remember my watch list the 5's were $11.99 free shipping and the 10's were $16.99 free shipping (maybe less, been a while since I looked). I hope this helps as I have never seen a bottle from the vendor you mention. Oh the needle tips come with a rubber cover that slides around the bottle neck and sticks over the needle that's not in the pick... just search squeezable dropper bottle on google, amazon or eBay...happy hunting.
Joe