You are really underestimating the cost of moving up. I recall, but forget the teams involved, a one up move costing 3 picks in the first round.
Honestly, I think it might be you that overestimate the cost. I have gone back and look at the last five drafts and have found some somewhat comparable trades. I didn’t go further back as I thought that would be kind of irrelevant since the prize and what teams expect to get in these trades have simply changed. Also, I don’t know how these trades match up with the trade value chart since I am fairly certain that I have heard multiple teams tell how they don’t really use that anymore. That said, I doubt that the mentioned trades are all in accordance with the chart.
In 2014 and 2015 there were no comparable trades. In 2013, 2016 and 2017 there were two in each year.
2013
The Dolphins traded up from #12 to #3 with the Raiders. The Dolphins only paid a second round pick.
The Rams traded up from #16 to #8 with the Bills. The Rams paid their second-, third and seventh round pick. They got the Bills’ third round pick in exchange.
2016 – That year the #8 selection were traded three times. Only two of them are interesting here as the last time were the Eagles moving from #8 to #2.
The Eagles traded up from #13 to #8 with the Dolphins. The Eagles paid two above average players that didn’t factor into the teams’ plans for the future.
The Titans traded up from #15 to #8 with the Browns. The Titans paid a third round selection as well as a second round selection the next year. They got a sixth round pick in return from the Browns.
2017 - I have included these two trades though they are not into the top 10 which usually raises the cost. They are included because both of them have both teams moving very far which should increase the cost, and both trades are just outside the top 10.
The Chiefs traded up from #27 to #10 with the Bills. The Chiefs paid a third round pick as well as their first round pick the next year.
The Texans traded up from #25 to #12 with the Browns. The Texans paid their first round pick the next year.
Obviously, none of these trades are exactly comparable as things like what do the selling team want, what are the trends in the league, how much do the buying team want to trade up and several other stuff factors in as well. I think, however, it is a more fair guideline than the trade value chart.