International sources don't cover BD that much every time unless there's announcement through press release/tender from buyer/supplier or photo/video. Janes and Quwa maybe the only sources cover BD most times but nothing gonna ever beat the local sources on news coverage. Local sources always reports more news earlier than anyone. That goes for all countries, especially Asian ones.
Bangladesh already confirmed purchase of TRG-300 and being the launch customer of VT-5 tank. But i don't think any int'l sources have reported it yet. As i said earlier BD military officials don't reveal too much infos, so don't rely on int'l sources too much. As for the previous news link i shared, it was not to prove that BD is buying ballistic from Russia but the initiative it took to get one. Read carefully, the line clearly mentions that Russia is only offering their missile not the other way around. If Myanmar buys S-400, it won't go unanswered.
BD haven't even started building the frigate and design-specs are not even final yet. So how are you comparing your's with our's? Something based on Type 54A is also BN's option which you are buying too.