That's bogus, he gave it to IOcoin for 0.05 btc so he's just trying to rip us off plus he wants to be paid every year. I think we can find someone else.
No, the explorers have been 0.25 for the last weeks, and aren't sponsored only through posted bounty offers. The BTC/USD rate has crashed recently, and servers costs are still paid in USD or EUR... If BTC price keeps in the lower 4xx range, then 0.35 could be the next price. At 0.3 you were actually offered a price a bit lower (in USD) than other recent cryptos (when BTC was higher vs USD).
You should get that quote in fiat since next year .3 BTC could be $3,000 compared to $150 today.
BTC may go up in the future, or it may not, soon, or ever, and I'm not doing a derivatives financial service, and neither am I bookmaker
As for lifetime offers or un-provisionned services, well, I won't do that race to the bottom, period. Blockchain storage, CPU & memory requirements grow over time, and I'm not going to over commit to just pull the plug in 6 months. The current infrastructure WILL BE upgraded every few months to accommodate growth (already has been once), even if no new blockchain explorer is added.
That's just for the record btw, not last minute advertisement
If you find a cheaper service that satisfies you, then by all mean go for it.