Thanks for the info. I can help you here (I think) if you want to fix this.
To begin with, yes, regardless of the zone destination (UK, USA, Brazil, China etc.) the cost is - as you say - hard-wired to $4.10 (you know this, but it proves it is not some other problem!)
I don't know how many others would be sending a DVD or two OS in a standard CD mailer, but I would imagine it might be a few in the future.
Before I chanced upon your mod, I worked out all the country codes for the four Zones in the Austpost website. So, I can assist by supplying you with this info - here 'tis:
Zone A: NZ
Zone B: AF,AS,BD,BT,BN,KH,CN,CK,TP,FJ,PF,GU,HK,IN,ID,JP,KI,KP,KR,LA,MO,MY,MV,MH,FM,MM,NR ,NP,NC,NU,MP,PK,PW,PG,PH,PN,WS,SG,SB,LK,TW,TH,TK,TO,TV,VU,VN,WF
Zone C: BH,CA,KM,IR,IQ,IL,JO,KW,LB,MU,MX,OM,QA,RE,PM,SA,SY,AE,US,UM,YE
Zone D: AL,DZ,AO,AI,AG,AR,AM,AW,AC,AT,AZ,BS,BB,BY,BE,BZ,BJ,BM,BO,BA,BW,BR,IO,BG,BF,BI,CM ,CV,KY,CF,TD,CL,CO,CG,CD,CR,CI,HR,CU,CY,CZ,DK,DJ,DM,DO,EC,EG,SV,GQ,ER,EE,ET,FK,F I,FR,GF,GA,GM,GE,DE,GH,GI,GR,GL,GD,GP,GT,GN,GW,GY,HT,VA,HN,HU,IS,IE,IT,JM,KZ,KE, KG,LS,LR,LY,LI,LT,LU,MK,MG,MW,ML,MT,MQ,MR,MD,MN,ME,MS,MA,MZ,NA,NL,AN,NI,NE,NG,NO ,PA,PY,PE,PL,PT,PR,RO,RU,RW,KN,LC,VC,ST,SN,SP,SC,SL,SK,SI,SO,ZA,ES,SD,SR,SZ,SE,C H,TJ,TZ,TG,TT,TY,TN,TR,TM,TC,UG,UA,UK,UY,UZ,VE,VG,VI,ZM,ZW
Clearly, the last lot comes to more than 255 characters!
If you need any more hack work done - I'm willing.
Terry



