From Una Una; a new unagi concept located at Bugis+ beside Ramen Champion.

Serving up a variety of Unagi dishes with a smaller variety of non-unagi menu items, the Hitsumabushi is pretty much a steal at its price point at $19.80++ for the double portion. Served with soup, some condiments, Dashi broth and pickles on the side, the main star of the show here would definitely be the Unagi that is tenderly grilled over charcoal. Watching the action in the kitchen live through the glass window, the Unagi is expertly grilled to give that nice crusted exterior that is all smoky whilst glazed in a thick, sweet sauce (albeit sweeter than those of other Unagi specialist stores here) that patrons can also add on themselves — the sauce being made available at the condiment bar placed on every dining table here with the utensils box. We also noticed how the Unagi here is rather plump, and the double portion comes with a pretty generous load of Unagi that is portioned well with the portion of pearly, short grain rice sitting beneath. Adding the Dashi broth into the Hitsumabushi, it helps to add an umami note to the dish, further elevating its flavours with a contrasting tone. Whilst the pickles are not much to shout about, the soup on the side comes clear and infused with Yuzu for a refreshing zing; helps to cut out the heavier flavours of the bowl itself.

Hi yo is this basically double the portion of the 9.80 hitsumabushi
Nicholas Ray hi; the $9.80 would be for the "Small" portion, which is essentially one size smaller than the "Regular" at $14.80. The "Double" would supposedly refer to double of the "Regular" I guess. Hope this helps :)
Xing Wei Chua, thank you! It definitely helps!