@Socinus:
Well, plastic explosives cost 100 x rating. You need the base price to be less than or equal to 1000 nuyen in order to get an interval of 1day. Rushing the job it's 12 hours. The availability is 16F, so the threshold is 16, and with 2 rolls that's gonna next to impossible to do. We'll try it though. For an extra 25% of base price you can add 1 die up to 10 dice.
I'll give your Army EOD contact Negotations 3 and Charisma 5. So for 2 kilos of rating 5, that's 1000 nuyen+ 2,500 for 10 more dice = 3,500 nuyen. Test is Neg 3 + Cha 5 + Connect 5 + increased price 10 (16, 12 hour), with 1's and 2's counting for glitches. Rolling for your contact, I get:
23d6.hits(5)=4, 23d6.hits(5)=10. Since he's Connection 5 and for a favor that you now owe him, your contact will use Edge and reroll the first roll.
19d6.hits(5)=3. No glitches and you make the threshold. So he got you 2 kilos of rating 5 plastic explosives for 3,500 nuyen on really short notice!
Commercial explosives however, are 100 nuyen/ kilo with an availability of 8R. So say you buy 5 kilos of that. That's 500 nuyen base cost, so the test would be your contacts Negotiation + Charisma + Connection (8, 1day). Now if you rush the job, then that's (8,12 hour), which is definitely doable in 2 rolls. For every 125 nuyen added you get one more die. Adding 500 nuyen to the price gives you 4 dice.
So that's Neg 3 + Cha 5 + Connection 5 + added price 4 (8,12hour) test with 1's and 2's counting for glitches.
17d6.hits(5)=9, 17d6.hits(5)=7. So he gets you 5 kilos of rating 3 commercial explosives for 1000 nuyen.
He throws in two blasting caps for free.
He's got the stuff for you like you asked and if you don't wanna buy that's really gonna piss him off.