update on contact with A (and a condensed section of answers to questions above):
i emailed A yesterday and received a response today. the response offered detailed info on product, shipping options, and payment options.
if you're interested in specifics i suggest emailing A. briefly, A offers 1 specific product - 100ml liquid containing 6.3gm NaPentobarb.
A will ship regular post free or private post at additional cost
A offered 4 options for payments
A notes specific countries where delivery is banned as well as countries where customs are difficult. A also states outright that shipping internationally is a risk (estimated that around 10% of packages are detained) and therefore there is no guarantee to receive. as a result A does not offer a refund in the case of no delivery but will offer to send again at an unspecified lower cost.
i am not confirming/validating/endorsing A; rather, after reading through numerous pages of questions, concerns, doubts, etc. i thought i would provide an ongoing reporting of my experience.
**i am not interested in being a source of specifics related to cost, contact info, etc. my aim is simply to document my experience so that other readers can decide if they want to pursue this particular path. A's information is available through the pph which can be found in the resources sticky at the top of the sanctioned suicide main thread.**